[llvm] [NFC][TableGen] Adopt CodeGenHelpers in SDNodeInfoEmitter (PR #165622)

[Rahul Joshi via llvm-commits]

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@@ -7,13 +7,11 @@ def MyTarget : Target;
 def my_noop : SDNode<"MyTargetISD::NOOP", SDTypeProfile<0, 0, []>>;
 
 // CHECK:       namespace llvm::MyTargetISD {
-// CHECK-EMPTY:
 // CHECK-NEXT:  enum GenNodeType : unsigned {
 // CHECK-NEXT:    NOOP = ISD::BUILTIN_OP_END,
 // CHECK-NEXT:  };
 // CHECK-EMPTY:
 // CHECK-NEXT:  static constexpr unsigned GENERATED_OPCODE_END = NOOP + 1;
-// CHECK-EMPTY:
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jurahul wrote:

Done, there' still an extra empty line due to the use of a raw string literal in `StringToOffsetTable::EmitStringTableDef`, which we should try to eliminate. But will do that separately.

https://github.com/llvm/llvm-project/pull/165622